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     | 
    
      CREATE TABLE test_trgm2(t text COLLATE "C");
\copy test_trgm2 from 'data/trgm2.data'
-- reduce noise
set extra_float_digits = 0;
select t,word_similarity('Baykal',t) as sml from test_trgm2 where 'Baykal' <% t order by sml desc, t;
                  t                  |   sml    
-------------------------------------+----------
 Baykal                              |        1
 Boloto Baykal                       |        1
 Boloto Malyy Baykal                 |        1
 Kolkhoz Krasnyy Baykal              |        1
 Ozero Baykal                        |        1
 Polevoy Stan Baykal                 |        1
 Port Baykal                         |        1
 Prud Novyy Baykal                   |        1
 Sanatoriy Baykal                    |        1
 Stantsiya Baykal                    |        1
 Zaliv Baykal                        |        1
 Baykalikha                          | 0.857143
 Baykalo-Amurskaya Zheleznaya Doroga | 0.857143
 Baykalovo                           | 0.857143
 Baykalovsk                          | 0.857143
 Baykalovskiy                        | 0.857143
 Baykalovskiy Rayon                  | 0.857143
 Baykalsko                           | 0.857143
 Maloye Baykalovo                    | 0.857143
 Zabaykal                            | 0.714286
(20 rows)
select t,word_similarity('Kabankala',t) as sml from test_trgm2 where 'Kabankala' <% t order by sml desc, t;
              t               | sml 
------------------------------+-----
 Kabankala                    |   1
 Kabankalan City Public Plaza | 0.9
 Abankala                     | 0.7
 Ntombankala School           | 0.6
(4 rows)
select t,word_similarity('Baykal',t) as sml from test_trgm2 where t %> 'Baykal' order by sml desc, t;
                  t                  |   sml    
-------------------------------------+----------
 Baykal                              |        1
 Boloto Baykal                       |        1
 Boloto Malyy Baykal                 |        1
 Kolkhoz Krasnyy Baykal              |        1
 Ozero Baykal                        |        1
 Polevoy Stan Baykal                 |        1
 Port Baykal                         |        1
 Prud Novyy Baykal                   |        1
 Sanatoriy Baykal                    |        1
 Stantsiya Baykal                    |        1
 Zaliv Baykal                        |        1
 Baykalikha                          | 0.857143
 Baykalo-Amurskaya Zheleznaya Doroga | 0.857143
 Baykalovo                           | 0.857143
 Baykalovsk                          | 0.857143
 Baykalovskiy                        | 0.857143
 Baykalovskiy Rayon                  | 0.857143
 Baykalsko                           | 0.857143
 Maloye Baykalovo                    | 0.857143
 Zabaykal                            | 0.714286
(20 rows)
select t,word_similarity('Kabankala',t) as sml from test_trgm2 where t %> 'Kabankala' order by sml desc, t;
              t               | sml 
------------------------------+-----
 Kabankala                    |   1
 Kabankalan City Public Plaza | 0.9
 Abankala                     | 0.7
 Ntombankala School           | 0.6
(4 rows)
select t <->> 'Kabankala', t from test_trgm2 order by t <->> 'Kabankala' limit 7;
 ?column? |                t                 
----------+----------------------------------
        0 | Kabankala
      0.1 | Kabankalan City Public Plaza
      0.3 | Abankala
      0.4 | Ntombankala School
 0.416667 | Kabakala
      0.5 | Nehalla Bankalah Reserved Forest
 0.538462 | Kabikala
(7 rows)
create index trgm_idx2 on test_trgm2 using gist (t gist_trgm_ops);
set enable_seqscan=off;
select t,word_similarity('Baykal',t) as sml from test_trgm2 where 'Baykal' <% t order by sml desc, t;
                  t                  |   sml    
-------------------------------------+----------
 Baykal                              |        1
 Boloto Baykal                       |        1
 Boloto Malyy Baykal                 |        1
 Kolkhoz Krasnyy Baykal              |        1
 Ozero Baykal                        |        1
 Polevoy Stan Baykal                 |        1
 Port Baykal                         |        1
 Prud Novyy Baykal                   |        1
 Sanatoriy Baykal                    |        1
 Stantsiya Baykal                    |        1
 Zaliv Baykal                        |        1
 Baykalikha                          | 0.857143
 Baykalo-Amurskaya Zheleznaya Doroga | 0.857143
 Baykalovo                           | 0.857143
 Baykalovsk                          | 0.857143
 Baykalovskiy                        | 0.857143
 Baykalovskiy Rayon                  | 0.857143
 Baykalsko                           | 0.857143
 Maloye Baykalovo                    | 0.857143
 Zabaykal                            | 0.714286
(20 rows)
select t,word_similarity('Kabankala',t) as sml from test_trgm2 where 'Kabankala' <% t order by sml desc, t;
              t               | sml 
------------------------------+-----
 Kabankala                    |   1
 Kabankalan City Public Plaza | 0.9
 Abankala                     | 0.7
 Ntombankala School           | 0.6
(4 rows)
select t,word_similarity('Baykal',t) as sml from test_trgm2 where t %> 'Baykal' order by sml desc, t;
                  t                  |   sml    
-------------------------------------+----------
 Baykal                              |        1
 Boloto Baykal                       |        1
 Boloto Malyy Baykal                 |        1
 Kolkhoz Krasnyy Baykal              |        1
 Ozero Baykal                        |        1
 Polevoy Stan Baykal                 |        1
 Port Baykal                         |        1
 Prud Novyy Baykal                   |        1
 Sanatoriy Baykal                    |        1
 Stantsiya Baykal                    |        1
 Zaliv Baykal                        |        1
 Baykalikha                          | 0.857143
 Baykalo-Amurskaya Zheleznaya Doroga | 0.857143
 Baykalovo                           | 0.857143
 Baykalovsk                          | 0.857143
 Baykalovskiy                        | 0.857143
 Baykalovskiy Rayon                  | 0.857143
 Baykalsko                           | 0.857143
 Maloye Baykalovo                    | 0.857143
 Zabaykal                            | 0.714286
(20 rows)
select t,word_similarity('Kabankala',t) as sml from test_trgm2 where t %> 'Kabankala' order by sml desc, t;
              t               | sml 
------------------------------+-----
 Kabankala                    |   1
 Kabankalan City Public Plaza | 0.9
 Abankala                     | 0.7
 Ntombankala School           | 0.6
(4 rows)
explain (costs off)
select t <->> 'Kabankala', t from test_trgm2 order by t <->> 'Kabankala' limit 7;
                   QUERY PLAN                   
------------------------------------------------
 Limit
   ->  Index Scan using trgm_idx2 on test_trgm2
         Order By: (t <->> 'Kabankala'::text)
(3 rows)
select t <->> 'Kabankala', t from test_trgm2 order by t <->> 'Kabankala' limit 7;
 ?column? |                t                 
----------+----------------------------------
        0 | Kabankala
      0.1 | Kabankalan City Public Plaza
      0.3 | Abankala
      0.4 | Ntombankala School
 0.416667 | Kabakala
      0.5 | Nehalla Bankalah Reserved Forest
 0.538462 | Kabikala
(7 rows)
drop index trgm_idx2;
create index trgm_idx2 on test_trgm2 using gin (t gin_trgm_ops);
set enable_seqscan=off;
select t,word_similarity('Baykal',t) as sml from test_trgm2 where 'Baykal' <% t order by sml desc, t;
                  t                  |   sml    
-------------------------------------+----------
 Baykal                              |        1
 Boloto Baykal                       |        1
 Boloto Malyy Baykal                 |        1
 Kolkhoz Krasnyy Baykal              |        1
 Ozero Baykal                        |        1
 Polevoy Stan Baykal                 |        1
 Port Baykal                         |        1
 Prud Novyy Baykal                   |        1
 Sanatoriy Baykal                    |        1
 Stantsiya Baykal                    |        1
 Zaliv Baykal                        |        1
 Baykalikha                          | 0.857143
 Baykalo-Amurskaya Zheleznaya Doroga | 0.857143
 Baykalovo                           | 0.857143
 Baykalovsk                          | 0.857143
 Baykalovskiy                        | 0.857143
 Baykalovskiy Rayon                  | 0.857143
 Baykalsko                           | 0.857143
 Maloye Baykalovo                    | 0.857143
 Zabaykal                            | 0.714286
(20 rows)
select t,word_similarity('Kabankala',t) as sml from test_trgm2 where 'Kabankala' <% t order by sml desc, t;
              t               | sml 
------------------------------+-----
 Kabankala                    |   1
 Kabankalan City Public Plaza | 0.9
 Abankala                     | 0.7
 Ntombankala School           | 0.6
(4 rows)
select t,word_similarity('Baykal',t) as sml from test_trgm2 where t %> 'Baykal' order by sml desc, t;
                  t                  |   sml    
-------------------------------------+----------
 Baykal                              |        1
 Boloto Baykal                       |        1
 Boloto Malyy Baykal                 |        1
 Kolkhoz Krasnyy Baykal              |        1
 Ozero Baykal                        |        1
 Polevoy Stan Baykal                 |        1
 Port Baykal                         |        1
 Prud Novyy Baykal                   |        1
 Sanatoriy Baykal                    |        1
 Stantsiya Baykal                    |        1
 Zaliv Baykal                        |        1
 Baykalikha                          | 0.857143
 Baykalo-Amurskaya Zheleznaya Doroga | 0.857143
 Baykalovo                           | 0.857143
 Baykalovsk                          | 0.857143
 Baykalovskiy                        | 0.857143
 Baykalovskiy Rayon                  | 0.857143
 Baykalsko                           | 0.857143
 Maloye Baykalovo                    | 0.857143
 Zabaykal                            | 0.714286
(20 rows)
select t,word_similarity('Kabankala',t) as sml from test_trgm2 where t %> 'Kabankala' order by sml desc, t;
              t               | sml 
------------------------------+-----
 Kabankala                    |   1
 Kabankalan City Public Plaza | 0.9
 Abankala                     | 0.7
 Ntombankala School           | 0.6
(4 rows)
set "pg_trgm.word_similarity_threshold" to 0.5;
select t,word_similarity('Baykal',t) as sml from test_trgm2 where 'Baykal' <% t order by sml desc, t;
                  t                  |   sml    
-------------------------------------+----------
 Baykal                              |        1
 Boloto Baykal                       |        1
 Boloto Malyy Baykal                 |        1
 Kolkhoz Krasnyy Baykal              |        1
 Ozero Baykal                        |        1
 Polevoy Stan Baykal                 |        1
 Port Baykal                         |        1
 Prud Novyy Baykal                   |        1
 Sanatoriy Baykal                    |        1
 Stantsiya Baykal                    |        1
 Zaliv Baykal                        |        1
 Baykalikha                          | 0.857143
 Baykalo-Amurskaya Zheleznaya Doroga | 0.857143
 Baykalovo                           | 0.857143
 Baykalovsk                          | 0.857143
 Baykalovskiy                        | 0.857143
 Baykalovskiy Rayon                  | 0.857143
 Baykalsko                           | 0.857143
 Maloye Baykalovo                    | 0.857143
 Zabaykal                            | 0.714286
 Bakal Batu                          | 0.571429
 Zabaykalka                          | 0.571429
 Zabaykalovskiy                      | 0.571429
(23 rows)
select t,word_similarity('Kabankala',t) as sml from test_trgm2 where 'Kabankala' <% t order by sml desc, t;
                t                 |   sml    
----------------------------------+----------
 Kabankala                        |        1
 Kabankalan City Public Plaza     |      0.9
 Abankala                         |      0.7
 Ntombankala School               |      0.6
 Kabakala                         | 0.583333
 Nehalla Bankalah Reserved Forest |      0.5
(6 rows)
select t,word_similarity('Baykal',t) as sml from test_trgm2 where t %> 'Baykal' order by sml desc, t;
                  t                  |   sml    
-------------------------------------+----------
 Baykal                              |        1
 Boloto Baykal                       |        1
 Boloto Malyy Baykal                 |        1
 Kolkhoz Krasnyy Baykal              |        1
 Ozero Baykal                        |        1
 Polevoy Stan Baykal                 |        1
 Port Baykal                         |        1
 Prud Novyy Baykal                   |        1
 Sanatoriy Baykal                    |        1
 Stantsiya Baykal                    |        1
 Zaliv Baykal                        |        1
 Baykalikha                          | 0.857143
 Baykalo-Amurskaya Zheleznaya Doroga | 0.857143
 Baykalovo                           | 0.857143
 Baykalovsk                          | 0.857143
 Baykalovskiy                        | 0.857143
 Baykalovskiy Rayon                  | 0.857143
 Baykalsko                           | 0.857143
 Maloye Baykalovo                    | 0.857143
 Zabaykal                            | 0.714286
 Bakal Batu                          | 0.571429
 Zabaykalka                          | 0.571429
 Zabaykalovskiy                      | 0.571429
(23 rows)
select t,word_similarity('Kabankala',t) as sml from test_trgm2 where t %> 'Kabankala' order by sml desc, t;
                t                 |   sml    
----------------------------------+----------
 Kabankala                        |        1
 Kabankalan City Public Plaza     |      0.9
 Abankala                         |      0.7
 Ntombankala School               |      0.6
 Kabakala                         | 0.583333
 Nehalla Bankalah Reserved Forest |      0.5
(6 rows)
set "pg_trgm.word_similarity_threshold" to 0.3;
select t,word_similarity('Baykal',t) as sml from test_trgm2 where 'Baykal' <% t order by sml desc, t;
                             t                             |   sml    
-----------------------------------------------------------+----------
 Baykal                                                    |        1
 Boloto Baykal                                             |        1
 Boloto Malyy Baykal                                       |        1
 Kolkhoz Krasnyy Baykal                                    |        1
 Ozero Baykal                                              |        1
 Polevoy Stan Baykal                                       |        1
 Port Baykal                                               |        1
 Prud Novyy Baykal                                         |        1
 Sanatoriy Baykal                                          |        1
 Stantsiya Baykal                                          |        1
 Zaliv Baykal                                              |        1
 Baykalikha                                                | 0.857143
 Baykalo-Amurskaya Zheleznaya Doroga                       | 0.857143
 Baykalovo                                                 | 0.857143
 Baykalovsk                                                | 0.857143
 Baykalovskiy                                              | 0.857143
 Baykalovskiy Rayon                                        | 0.857143
 Baykalsko                                                 | 0.857143
 Maloye Baykalovo                                          | 0.857143
 Zabaykal                                                  | 0.714286
 Bakal Batu                                                | 0.571429
 Zabaykalka                                                | 0.571429
 Zabaykalovskiy                                            | 0.571429
 Air Bakal-kecil                                           | 0.444444
 Bakal                                                     | 0.444444
 Bakal Dos                                                 | 0.444444
 Bakal Julu                                                | 0.444444
 Bakal Khel                                                | 0.444444
 Bakal Lama                                                | 0.444444
 Bakal Tres                                                | 0.444444
 Bakal Uno                                                 | 0.444444
 Daang Bakal                                               | 0.444444
 Desa Bakal                                                | 0.444444
 Eat Bakal                                                 | 0.444444
 Gunung Bakal                                              | 0.444444
 Sidi Bakal                                                | 0.444444
 Stantsiya Bakal                                           | 0.444444
 Sungai Bakal                                              | 0.444444
 Talang Bakal                                              | 0.444444
 Uruk Bakal                                                | 0.444444
 Zaouia Oulad Bakal                                        | 0.444444
 Al Barkali                                                | 0.428571
 Aparthotel Adagio Premium Dubai Al Barsha                 | 0.428571
 Baikal Business Centre                                    | 0.428571
 Bay of Backaland                                          | 0.428571
 Boikalakalawa Bay                                         | 0.428571
 Doubletree By Hilton Dubai Al Barsha Hotel and Res        | 0.428571
 Doubletree By Hilton Hotel and Apartments Dubai Al Barsha | 0.428571
 Doubletree Res.Dubai-Al Barsha                            | 0.428571
 Holiday Inn Dubai Al Barsha                               | 0.428571
 Jabal Barkal                                              | 0.428571
 Novotel Dubai Al Barsha                                   | 0.428571
 Park Inn By Radisson Dubai Al Barsha                      | 0.428571
 Ramee Rose Hotel Dubai Al Barsha                          | 0.428571
 Waikalabubu Bay                                           | 0.428571
 Baikal                                                    |      0.4
 Baikal Airfield                                           |      0.4
 Baikal Hotel Moscow                                       |      0.4
 Baikal Listvyanka Hotel                                   |      0.4
 Baikal Mountains                                          |      0.4
 Baikal Plaza                                              |      0.4
 Bajkal                                                    |      0.4
 Bankal                                                    |      0.4
 Bankal School                                             |      0.4
 Barkal                                                    |      0.4
 Lake Baikal                                               |      0.4
 Mbay Bakala                                               |      0.4
 Oulad el Bakkal                                           |      0.4
 Sidi Mohammed Bakkal                                      |      0.4
 Bairkal                                                   | 0.363636
 Bairkal Dhora                                             | 0.363636
 Bairkal Jabal                                             | 0.363636
 Batikal                                                   | 0.363636
 Bakala                                                    | 0.333333
 Bakala Koupi                                              | 0.333333
 Bakalaale                                                 | 0.333333
 Bakalabwa Pans                                            | 0.333333
 Bakalaeng                                                 | 0.333333
 Bakalafoulou                                              | 0.333333
 Bakalalan Airport                                         | 0.333333
 Bakalam                                                   | 0.333333
 Bakalambani                                               | 0.333333
 Bakalan                                                   | 0.333333
 Bakalan Barat                                             | 0.333333
 Bakalan Dua                                               | 0.333333
 Bakalan Kidul                                             | 0.333333
 Bakalan Kulon                                             | 0.333333
 Bakalan Lor                                               | 0.333333
 Bakalan River                                             | 0.333333
 Bakalan Tengah                                            | 0.333333
 Bakalan Wetan                                             | 0.333333
 Bakalang                                                  | 0.333333
 Bakalao Asibi Point                                       | 0.333333
 Bakalao Point                                             | 0.333333
 Bakalar Air Force Base (historical)                       | 0.333333
 Bakalar Lake                                              | 0.333333
 Bakalar Library                                           | 0.333333
 Bakalarr                                                  | 0.333333
 Bakalauri                                                 | 0.333333
 Bakalauri1                                                | 0.333333
 Bakalauri2                                                | 0.333333
 Bakalauri3                                                | 0.333333
 Bakalauri4                                                | 0.333333
 Bakalauri5                                                | 0.333333
 Bakalauri6                                                | 0.333333
 Bakalauri7                                                | 0.333333
 Bakalauri8                                                | 0.333333
 Bakalauri9                                                | 0.333333
 Bakalawa                                                  | 0.333333
 Bakalbhar                                                 | 0.333333
 Bakalbuah                                                 | 0.333333
 Bakalda                                                   | 0.333333
 Bakaldalam                                                | 0.333333
 Bakaldinskoye                                             | 0.333333
 Bakaldovshchina                                           | 0.333333
 Bakaldukuh                                                | 0.333333
 Bakaldum                                                  | 0.333333
 Bakaldy                                                   | 0.333333
 Bakale                                                    | 0.333333
 Bakaleko                                                  | 0.333333
 Bakalerek                                                 | 0.333333
 Bakaley                                                   | 0.333333
 Bakaleyka                                                 | 0.333333
 Bakalha                                                   | 0.333333
 Bakali                                                    | 0.333333
 Bakalia Char                                              | 0.333333
 Bakalica                                                  | 0.333333
 Bakalinga                                                 | 0.333333
 Bakalino                                                  | 0.333333
 Bakalinskiy                                               | 0.333333
 Bakalinskiy Leskhoz                                       | 0.333333
 Bakalinskiy Rayon                                         | 0.333333
 Bakalipur                                                 | 0.333333
 Bakalite                                                  | 0.333333
 Bakaljaya                                                 | 0.333333
 Bakalka                                                   | 0.333333
 Bakall                                                    | 0.333333
 Bakalnica                                                 | 0.333333
 Bakalod Island                                            | 0.333333
 Bakalongo                                                 | 0.333333
 Bakaloolay                                                | 0.333333
 Bakalou                                                   | 0.333333
 Bakalovina                                                | 0.333333
 Bakalovka                                                 | 0.333333
 Bakalovo                                                  | 0.333333
 Bakalovskaya Ferma                                        | 0.333333
 Bakalpakebo                                               | 0.333333
 Bakalpokok                                                | 0.333333
 Bakalrejo                                                 | 0.333333
 Bakalsen                                                  | 0.333333
 Bakalshile                                                | 0.333333
 Bakaltua Bank                                             | 0.333333
 Bakalua                                                   | 0.333333
 Bakalukalu                                                | 0.333333
 Bakalukalu Shan                                           | 0.333333
 Bakalukudu                                                | 0.333333
 Bakalum                                                   | 0.333333
 Bakaly                                                    | 0.333333
 Bakaly TV Mast                                            | 0.333333
 Buur Bakale                                               | 0.333333
 Buur Bakaley                                              | 0.333333
 Columbus Bakalar Municipal Airport                        | 0.333333
 Dakshin Bakalia                                           | 0.333333
 Danau Bakalan                                             | 0.333333
 Desa Bakalan                                              | 0.333333
 Desa Bakalankrajan                                        | 0.333333
 Desa Bakalankrapyak                                       | 0.333333
 Desa Bakalanpule                                          | 0.333333
 Desa Bakalanrayung                                        | 0.333333
 Desa Bakalanwringinpitu                                   | 0.333333
 Desa Bakalrejo                                            | 0.333333
 Efrejtor Bakalovo                                         | 0.333333
 Efreytor-Bakalovo                                         | 0.333333
 Gora Bakalyadyr                                           | 0.333333
 Gory Bakaly                                               | 0.333333
 Gunung Bakalan                                            | 0.333333
 Ile Bakalibu                                              | 0.333333
 Kali Bakalan                                              | 0.333333
 Kampong Bakaladong                                        | 0.333333
 Khor Bakallii                                             | 0.333333
 Krajan Bakalan                                            | 0.333333
 Kusu-Bakali                                               | 0.333333
 Kwala Bakala                                              | 0.333333
 Ngao Bakala                                               | 0.333333
 Ovrag Bakalda                                             | 0.333333
 Pematang Bakalpanang                                      | 0.333333
 Pematang Bakalpanjang                                     | 0.333333
 Pulau Bakalan                                             | 0.333333
 Pulau Bakalanpauno                                        | 0.333333
 Ragha Bakalzai                                            | 0.333333
 Rodnik Bakalybulak                                        | 0.333333
 Salu Bakalaeng                                            | 0.333333
 Selat Bakalan                                             | 0.333333
 Selat Bakalanpauno                                        | 0.333333
 Sidi Mohammed el Bakali                                   | 0.333333
 Sopka Bakaly                                              | 0.333333
 Sovkhoz Bakalinskiy                                       | 0.333333
 Sungai Bakala                                             | 0.333333
 Sungai Bakaladiyan                                        | 0.333333
 Tanjung Bakalinga                                         | 0.333333
 Teluk Bakalan                                             | 0.333333
 Teluk Bakalang                                            | 0.333333
 Tubu Bakalekuk                                            | 0.333333
 Tukad Bakalan                                             | 0.333333
 Urochishche Bakalarnyn-Ayasy                              | 0.333333
 Urochishche Bakaldikha                                    | 0.333333
 Urochishche Bakalovo                                      | 0.333333
 Urochishche Bakaly                                        | 0.333333
 Bakkalmal                                                 | 0.307692
 Alue Bakkala                                              |      0.3
 Azib el Bakkali                                           |      0.3
 Ba Kaliin                                                 |      0.3
 Bagkalen                                                  |      0.3
 Bahkalleh                                                 |      0.3
 Baikalakko                                                |      0.3
 Baikalovo                                                 |      0.3
 Baikaluobbal                                              |      0.3
 Bakkala Cemetery                                          |      0.3
 Bakkalale                                                 |      0.3
 Bakkalegskardet                                           |      0.3
 Bakkalia                                                  |      0.3
 Bakkalykkja                                               |      0.3
 Bankali                                                   |      0.3
 Bankalol                                                  |      0.3
 Barkala                                                   |      0.3
 Barkala Park                                              |      0.3
 Barkala Rao                                               |      0.3
 Barkala Reserved Forest                                   |      0.3
 Barkalabava                                               |      0.3
 Barkaladja Pool                                           |      0.3
 Barkalare                                                 |      0.3
 Barkald                                                   |      0.3
 Barkald stasjon                                           |      0.3
 Barkalden                                                 |      0.3
 Barkaldfossen                                             |      0.3
 Barkaldvola                                               |      0.3
 Barkale                                                   |      0.3
 Barkaleh                                                  |      0.3
 Barkaleitet                                               |      0.3
 Barkali                                                   |      0.3
 Barkallou                                                 |      0.3
 Barkalne                                                  |      0.3
 Barkalova                                                 |      0.3
 Barkalovka                                                |      0.3
 Barkalow Hollow                                           |      0.3
 Baskalino                                                 |      0.3
 Baskaltsi                                                 |      0.3
 Baukala                                                   |      0.3
 Bavkalasis                                                |      0.3
 Bawkalut                                                  |      0.3
 Bawkalut Chaung                                           |      0.3
 Bikal                                                     |      0.3
 Clifton T Barkalow Elementary School                      |      0.3
 Gora Barkalova                                            |      0.3
 Gora Barkalyu                                             |      0.3
 Khrebet Batkali                                           |      0.3
 Kordon Barkalo                                            |      0.3
 Nehalla Bankalah Reserved Forest                          |      0.3
 Ras Barkallah                                             |      0.3
 Sopka Barkaleptskaya                                      |      0.3
 Urochishche Batkali                                       |      0.3
(261 rows)
select t,word_similarity('Kabankala',t) as sml from test_trgm2 where 'Kabankala' <% t order by sml desc, t;
                t                 |   sml    
----------------------------------+----------
 Kabankala                        |        1
 Kabankalan City Public Plaza     |      0.9
 Abankala                         |      0.7
 Ntombankala School               |      0.6
 Kabakala                         | 0.583333
 Nehalla Bankalah Reserved Forest |      0.5
 Kabikala                         | 0.461538
 Mwalaba-Kalamba                  | 0.454545
 Bakala Koupi                     |      0.4
 Bankal                           |      0.4
 Bankal School                    |      0.4
 Bankali                          |      0.4
 Bankalol                         |      0.4
 Jabba Kalai                      |      0.4
 Kanampumba-Kalawa                |      0.4
 Purba Kalaujan                   |      0.4
 Tumba-Kalamba                    |      0.4
 Daba Kalharereh                  | 0.363636
 Gagaba Kalo                      | 0.363636
 Jaba Kalle                       | 0.363636
 Dabakala                         | 0.333333
 Dalabakala                       | 0.333333
 Kambakala                        | 0.333333
 Ker Samba Kalla                  | 0.333333
 Fayzabadkala                     | 0.307692
 Gora Fayzabadkala                | 0.307692
 Guba Kalgalaksha                 | 0.307692
 Habakkala                        | 0.307692
 Kaikalahun Indian Reserve 25     | 0.307692
 Kaikalapettai                    | 0.307692
 Alue Bakkala                     |      0.3
 Ambadikala                       |      0.3
 Ambakala Wewa                    |      0.3
 Ataikala                         |      0.3
 Ba Kaliin                        |      0.3
 Bakala                           |      0.3
 Bakkala Cemetery                 |      0.3
 Bambakala                        |      0.3
 Barkala                          |      0.3
 Barkala Park                     |      0.3
 Barkala Rao                      |      0.3
 Barkala Reserved Forest          |      0.3
 Baukala                          |      0.3
 Beikala                          |      0.3
 Bikala                           |      0.3
 Bikala Madila                    |      0.3
 Bomba-Kalende                    |      0.3
 Bonagbakala                      |      0.3
 Boyagbakala                      |      0.3
 Bugor Arba-Kalgan                |      0.3
 Bumba-Kaloki                     |      0.3
 Bumba-Kalumba                    |      0.3
 Darreh Pumba Kal                 |      0.3
 Demba Kali                       |      0.3
 Embatkala                        |      0.3
 Gereba Kaler                     |      0.3
 Golba Kalo                       |      0.3
 Goth Soba Kaloi                  |      0.3
 Guba Kaldo                       |      0.3
 Guba Kalita                      |      0.3
 Gulba Kalle                      |      0.3
 Haikala                          |      0.3
 Kali Bakalan                     |      0.3
 Kali Purbakala                   |      0.3
 Kalibakal                        |      0.3
 Kalibakalako                     |      0.3
 Kalimundubakalan                 |      0.3
 Kamba-Kalele                     |      0.3
 Kimbakala                        |      0.3
 Kombakala                        |      0.3
 Kwala Bakala                     |      0.3
 Laikala                          |      0.3
 Maikala Range                    |      0.3
 Mambakala                        |      0.3
 Matamba-Kalenga                  |      0.3
 Matamba-Kalenge                  |      0.3
 Mbay Bakala                      |      0.3
 Mount Tohebakala                 |      0.3
 Naikala                          |      0.3
 Ngao Bakala                      |      0.3
 Purba Kalmegha                   |      0.3
 Sungai Bakala                    |      0.3
 Tagobikala                       |      0.3
 Tanjung Batikala                 |      0.3
 Tombakala                        |      0.3
 Tsibakala                        |      0.3
 Tumba-Kalumba                    |      0.3
 Tumba-Kalunga                    |      0.3
 Waikala                          |      0.3
(89 rows)
select t,word_similarity('Baykal',t) as sml from test_trgm2 where t %> 'Baykal' order by sml desc, t;
                             t                             |   sml    
-----------------------------------------------------------+----------
 Baykal                                                    |        1
 Boloto Baykal                                             |        1
 Boloto Malyy Baykal                                       |        1
 Kolkhoz Krasnyy Baykal                                    |        1
 Ozero Baykal                                              |        1
 Polevoy Stan Baykal                                       |        1
 Port Baykal                                               |        1
 Prud Novyy Baykal                                         |        1
 Sanatoriy Baykal                                          |        1
 Stantsiya Baykal                                          |        1
 Zaliv Baykal                                              |        1
 Baykalikha                                                | 0.857143
 Baykalo-Amurskaya Zheleznaya Doroga                       | 0.857143
 Baykalovo                                                 | 0.857143
 Baykalovsk                                                | 0.857143
 Baykalovskiy                                              | 0.857143
 Baykalovskiy Rayon                                        | 0.857143
 Baykalsko                                                 | 0.857143
 Maloye Baykalovo                                          | 0.857143
 Zabaykal                                                  | 0.714286
 Bakal Batu                                                | 0.571429
 Zabaykalka                                                | 0.571429
 Zabaykalovskiy                                            | 0.571429
 Air Bakal-kecil                                           | 0.444444
 Bakal                                                     | 0.444444
 Bakal Dos                                                 | 0.444444
 Bakal Julu                                                | 0.444444
 Bakal Khel                                                | 0.444444
 Bakal Lama                                                | 0.444444
 Bakal Tres                                                | 0.444444
 Bakal Uno                                                 | 0.444444
 Daang Bakal                                               | 0.444444
 Desa Bakal                                                | 0.444444
 Eat Bakal                                                 | 0.444444
 Gunung Bakal                                              | 0.444444
 Sidi Bakal                                                | 0.444444
 Stantsiya Bakal                                           | 0.444444
 Sungai Bakal                                              | 0.444444
 Talang Bakal                                              | 0.444444
 Uruk Bakal                                                | 0.444444
 Zaouia Oulad Bakal                                        | 0.444444
 Al Barkali                                                | 0.428571
 Aparthotel Adagio Premium Dubai Al Barsha                 | 0.428571
 Baikal Business Centre                                    | 0.428571
 Bay of Backaland                                          | 0.428571
 Boikalakalawa Bay                                         | 0.428571
 Doubletree By Hilton Dubai Al Barsha Hotel and Res        | 0.428571
 Doubletree By Hilton Hotel and Apartments Dubai Al Barsha | 0.428571
 Doubletree Res.Dubai-Al Barsha                            | 0.428571
 Holiday Inn Dubai Al Barsha                               | 0.428571
 Jabal Barkal                                              | 0.428571
 Novotel Dubai Al Barsha                                   | 0.428571
 Park Inn By Radisson Dubai Al Barsha                      | 0.428571
 Ramee Rose Hotel Dubai Al Barsha                          | 0.428571
 Waikalabubu Bay                                           | 0.428571
 Baikal                                                    |      0.4
 Baikal Airfield                                           |      0.4
 Baikal Hotel Moscow                                       |      0.4
 Baikal Listvyanka Hotel                                   |      0.4
 Baikal Mountains                                          |      0.4
 Baikal Plaza                                              |      0.4
 Bajkal                                                    |      0.4
 Bankal                                                    |      0.4
 Bankal School                                             |      0.4
 Barkal                                                    |      0.4
 Lake Baikal                                               |      0.4
 Mbay Bakala                                               |      0.4
 Oulad el Bakkal                                           |      0.4
 Sidi Mohammed Bakkal                                      |      0.4
 Bairkal                                                   | 0.363636
 Bairkal Dhora                                             | 0.363636
 Bairkal Jabal                                             | 0.363636
 Batikal                                                   | 0.363636
 Bakala                                                    | 0.333333
 Bakala Koupi                                              | 0.333333
 Bakalaale                                                 | 0.333333
 Bakalabwa Pans                                            | 0.333333
 Bakalaeng                                                 | 0.333333
 Bakalafoulou                                              | 0.333333
 Bakalalan Airport                                         | 0.333333
 Bakalam                                                   | 0.333333
 Bakalambani                                               | 0.333333
 Bakalan                                                   | 0.333333
 Bakalan Barat                                             | 0.333333
 Bakalan Dua                                               | 0.333333
 Bakalan Kidul                                             | 0.333333
 Bakalan Kulon                                             | 0.333333
 Bakalan Lor                                               | 0.333333
 Bakalan River                                             | 0.333333
 Bakalan Tengah                                            | 0.333333
 Bakalan Wetan                                             | 0.333333
 Bakalang                                                  | 0.333333
 Bakalao Asibi Point                                       | 0.333333
 Bakalao Point                                             | 0.333333
 Bakalar Air Force Base (historical)                       | 0.333333
 Bakalar Lake                                              | 0.333333
 Bakalar Library                                           | 0.333333
 Bakalarr                                                  | 0.333333
 Bakalauri                                                 | 0.333333
 Bakalauri1                                                | 0.333333
 Bakalauri2                                                | 0.333333
 Bakalauri3                                                | 0.333333
 Bakalauri4                                                | 0.333333
 Bakalauri5                                                | 0.333333
 Bakalauri6                                                | 0.333333
 Bakalauri7                                                | 0.333333
 Bakalauri8                                                | 0.333333
 Bakalauri9                                                | 0.333333
 Bakalawa                                                  | 0.333333
 Bakalbhar                                                 | 0.333333
 Bakalbuah                                                 | 0.333333
 Bakalda                                                   | 0.333333
 Bakaldalam                                                | 0.333333
 Bakaldinskoye                                             | 0.333333
 Bakaldovshchina                                           | 0.333333
 Bakaldukuh                                                | 0.333333
 Bakaldum                                                  | 0.333333
 Bakaldy                                                   | 0.333333
 Bakale                                                    | 0.333333
 Bakaleko                                                  | 0.333333
 Bakalerek                                                 | 0.333333
 Bakaley                                                   | 0.333333
 Bakaleyka                                                 | 0.333333
 Bakalha                                                   | 0.333333
 Bakali                                                    | 0.333333
 Bakalia Char                                              | 0.333333
 Bakalica                                                  | 0.333333
 Bakalinga                                                 | 0.333333
 Bakalino                                                  | 0.333333
 Bakalinskiy                                               | 0.333333
 Bakalinskiy Leskhoz                                       | 0.333333
 Bakalinskiy Rayon                                         | 0.333333
 Bakalipur                                                 | 0.333333
 Bakalite                                                  | 0.333333
 Bakaljaya                                                 | 0.333333
 Bakalka                                                   | 0.333333
 Bakall                                                    | 0.333333
 Bakalnica                                                 | 0.333333
 Bakalod Island                                            | 0.333333
 Bakalongo                                                 | 0.333333
 Bakaloolay                                                | 0.333333
 Bakalou                                                   | 0.333333
 Bakalovina                                                | 0.333333
 Bakalovka                                                 | 0.333333
 Bakalovo                                                  | 0.333333
 Bakalovskaya Ferma                                        | 0.333333
 Bakalpakebo                                               | 0.333333
 Bakalpokok                                                | 0.333333
 Bakalrejo                                                 | 0.333333
 Bakalsen                                                  | 0.333333
 Bakalshile                                                | 0.333333
 Bakaltua Bank                                             | 0.333333
 Bakalua                                                   | 0.333333
 Bakalukalu                                                | 0.333333
 Bakalukalu Shan                                           | 0.333333
 Bakalukudu                                                | 0.333333
 Bakalum                                                   | 0.333333
 Bakaly                                                    | 0.333333
 Bakaly TV Mast                                            | 0.333333
 Buur Bakale                                               | 0.333333
 Buur Bakaley                                              | 0.333333
 Columbus Bakalar Municipal Airport                        | 0.333333
 Dakshin Bakalia                                           | 0.333333
 Danau Bakalan                                             | 0.333333
 Desa Bakalan                                              | 0.333333
 Desa Bakalankrajan                                        | 0.333333
 Desa Bakalankrapyak                                       | 0.333333
 Desa Bakalanpule                                          | 0.333333
 Desa Bakalanrayung                                        | 0.333333
 Desa Bakalanwringinpitu                                   | 0.333333
 Desa Bakalrejo                                            | 0.333333
 Efrejtor Bakalovo                                         | 0.333333
 Efreytor-Bakalovo                                         | 0.333333
 Gora Bakalyadyr                                           | 0.333333
 Gory Bakaly                                               | 0.333333
 Gunung Bakalan                                            | 0.333333
 Ile Bakalibu                                              | 0.333333
 Kali Bakalan                                              | 0.333333
 Kampong Bakaladong                                        | 0.333333
 Khor Bakallii                                             | 0.333333
 Krajan Bakalan                                            | 0.333333
 Kusu-Bakali                                               | 0.333333
 Kwala Bakala                                              | 0.333333
 Ngao Bakala                                               | 0.333333
 Ovrag Bakalda                                             | 0.333333
 Pematang Bakalpanang                                      | 0.333333
 Pematang Bakalpanjang                                     | 0.333333
 Pulau Bakalan                                             | 0.333333
 Pulau Bakalanpauno                                        | 0.333333
 Ragha Bakalzai                                            | 0.333333
 Rodnik Bakalybulak                                        | 0.333333
 Salu Bakalaeng                                            | 0.333333
 Selat Bakalan                                             | 0.333333
 Selat Bakalanpauno                                        | 0.333333
 Sidi Mohammed el Bakali                                   | 0.333333
 Sopka Bakaly                                              | 0.333333
 Sovkhoz Bakalinskiy                                       | 0.333333
 Sungai Bakala                                             | 0.333333
 Sungai Bakaladiyan                                        | 0.333333
 Tanjung Bakalinga                                         | 0.333333
 Teluk Bakalan                                             | 0.333333
 Teluk Bakalang                                            | 0.333333
 Tubu Bakalekuk                                            | 0.333333
 Tukad Bakalan                                             | 0.333333
 Urochishche Bakalarnyn-Ayasy                              | 0.333333
 Urochishche Bakaldikha                                    | 0.333333
 Urochishche Bakalovo                                      | 0.333333
 Urochishche Bakaly                                        | 0.333333
 Bakkalmal                                                 | 0.307692
 Alue Bakkala                                              |      0.3
 Azib el Bakkali                                           |      0.3
 Ba Kaliin                                                 |      0.3
 Bagkalen                                                  |      0.3
 Bahkalleh                                                 |      0.3
 Baikalakko                                                |      0.3
 Baikalovo                                                 |      0.3
 Baikaluobbal                                              |      0.3
 Bakkala Cemetery                                          |      0.3
 Bakkalale                                                 |      0.3
 Bakkalegskardet                                           |      0.3
 Bakkalia                                                  |      0.3
 Bakkalykkja                                               |      0.3
 Bankali                                                   |      0.3
 Bankalol                                                  |      0.3
 Barkala                                                   |      0.3
 Barkala Park                                              |      0.3
 Barkala Rao                                               |      0.3
 Barkala Reserved Forest                                   |      0.3
 Barkalabava                                               |      0.3
 Barkaladja Pool                                           |      0.3
 Barkalare                                                 |      0.3
 Barkald                                                   |      0.3
 Barkald stasjon                                           |      0.3
 Barkalden                                                 |      0.3
 Barkaldfossen                                             |      0.3
 Barkaldvola                                               |      0.3
 Barkale                                                   |      0.3
 Barkaleh                                                  |      0.3
 Barkaleitet                                               |      0.3
 Barkali                                                   |      0.3
 Barkallou                                                 |      0.3
 Barkalne                                                  |      0.3
 Barkalova                                                 |      0.3
 Barkalovka                                                |      0.3
 Barkalow Hollow                                           |      0.3
 Baskalino                                                 |      0.3
 Baskaltsi                                                 |      0.3
 Baukala                                                   |      0.3
 Bavkalasis                                                |      0.3
 Bawkalut                                                  |      0.3
 Bawkalut Chaung                                           |      0.3
 Bikal                                                     |      0.3
 Clifton T Barkalow Elementary School                      |      0.3
 Gora Barkalova                                            |      0.3
 Gora Barkalyu                                             |      0.3
 Khrebet Batkali                                           |      0.3
 Kordon Barkalo                                            |      0.3
 Nehalla Bankalah Reserved Forest                          |      0.3
 Ras Barkallah                                             |      0.3
 Sopka Barkaleptskaya                                      |      0.3
 Urochishche Batkali                                       |      0.3
(261 rows)
select t,word_similarity('Kabankala',t) as sml from test_trgm2 where t %> 'Kabankala' order by sml desc, t;
                t                 |   sml    
----------------------------------+----------
 Kabankala                        |        1
 Kabankalan City Public Plaza     |      0.9
 Abankala                         |      0.7
 Ntombankala School               |      0.6
 Kabakala                         | 0.583333
 Nehalla Bankalah Reserved Forest |      0.5
 Kabikala                         | 0.461538
 Mwalaba-Kalamba                  | 0.454545
 Bakala Koupi                     |      0.4
 Bankal                           |      0.4
 Bankal School                    |      0.4
 Bankali                          |      0.4
 Bankalol                         |      0.4
 Jabba Kalai                      |      0.4
 Kanampumba-Kalawa                |      0.4
 Purba Kalaujan                   |      0.4
 Tumba-Kalamba                    |      0.4
 Daba Kalharereh                  | 0.363636
 Gagaba Kalo                      | 0.363636
 Jaba Kalle                       | 0.363636
 Dabakala                         | 0.333333
 Dalabakala                       | 0.333333
 Kambakala                        | 0.333333
 Ker Samba Kalla                  | 0.333333
 Fayzabadkala                     | 0.307692
 Gora Fayzabadkala                | 0.307692
 Guba Kalgalaksha                 | 0.307692
 Habakkala                        | 0.307692
 Kaikalahun Indian Reserve 25     | 0.307692
 Kaikalapettai                    | 0.307692
 Alue Bakkala                     |      0.3
 Ambadikala                       |      0.3
 Ambakala Wewa                    |      0.3
 Ataikala                         |      0.3
 Ba Kaliin                        |      0.3
 Bakala                           |      0.3
 Bakkala Cemetery                 |      0.3
 Bambakala                        |      0.3
 Barkala                          |      0.3
 Barkala Park                     |      0.3
 Barkala Rao                      |      0.3
 Barkala Reserved Forest          |      0.3
 Baukala                          |      0.3
 Beikala                          |      0.3
 Bikala                           |      0.3
 Bikala Madila                    |      0.3
 Bomba-Kalende                    |      0.3
 Bonagbakala                      |      0.3
 Boyagbakala                      |      0.3
 Bugor Arba-Kalgan                |      0.3
 Bumba-Kaloki                     |      0.3
 Bumba-Kalumba                    |      0.3
 Darreh Pumba Kal                 |      0.3
 Demba Kali                       |      0.3
 Embatkala                        |      0.3
 Gereba Kaler                     |      0.3
 Golba Kalo                       |      0.3
 Goth Soba Kaloi                  |      0.3
 Guba Kaldo                       |      0.3
 Guba Kalita                      |      0.3
 Gulba Kalle                      |      0.3
 Haikala                          |      0.3
 Kali Bakalan                     |      0.3
 Kali Purbakala                   |      0.3
 Kalibakal                        |      0.3
 Kalibakalako                     |      0.3
 Kalimundubakalan                 |      0.3
 Kamba-Kalele                     |      0.3
 Kimbakala                        |      0.3
 Kombakala                        |      0.3
 Kwala Bakala                     |      0.3
 Laikala                          |      0.3
 Maikala Range                    |      0.3
 Mambakala                        |      0.3
 Matamba-Kalenga                  |      0.3
 Matamba-Kalenge                  |      0.3
 Mbay Bakala                      |      0.3
 Mount Tohebakala                 |      0.3
 Naikala                          |      0.3
 Ngao Bakala                      |      0.3
 Purba Kalmegha                   |      0.3
 Sungai Bakala                    |      0.3
 Tagobikala                       |      0.3
 Tanjung Batikala                 |      0.3
 Tombakala                        |      0.3
 Tsibakala                        |      0.3
 Tumba-Kalumba                    |      0.3
 Tumba-Kalunga                    |      0.3
 Waikala                          |      0.3
(89 rows)
-- test unsatisfiable pattern
select * from test_trgm2 where t ~ '.*$x';
 t 
---
(0 rows)
 
     |